Pasteurizer.



L. S. PFOUTS.

PASTEURIZER.

APPLICATION Flu-:D Nov. 2o, 1911.

l1,189,479 Patented July 4, 1916.

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PASTEURIZER.

APPLICATION FILED NOV- 20. 19H.

1,1 89,479. Patented July 4, 1916.

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- to a pasteurizin 'To all whom it may concern VUNITED sTa-TEs PATENT OFFICE.

, LEROY S. PFOUTS, OF CANTON, OHIO,` ASSIGNOR TO THE MILLER PASTEURIZING MACHINE COMPANY, OF CANTON, OHIO, A CORPORATION 0F NEW JERSEY.

PASTEURIZER.

i 'Specification of Letters/Patent.

Patented July 4, 19164 Be it known that I, LEROY S. ProUTs, a citizen of the United States, residing at Canton in the county of Stark and State of Ohio, have invented certain new and useful Improvements in 'and relating to Pas'- teurizers, of which the following is a speciication. 'y

This invention relates to apparatus for the treatment of a liquid, such as milk...

The invention relates more particularly apparatus provided with mechanism in w ich the milk, after it is heated to the required temperature, is held at substantiallyv that temperature for a predetermined or variable period of time before being cooled. Y

For the purpose of illustration, I have, in the accompanying drawing, shown and he'rein described one form of apparatus embodying my invention.

Figure l is a view of an apparatus for treating or pasteurizing a liquid, the holder being shown in section and parts of the heater and cooler being shown in elevation. Fig. 2 is a transverse section on the line 2 2 of Fig. l. Fig. 3 is a top plan view of the top for-the inner cylinder. Fig. 4:.is a perspective view of the valve, valve stem and conduit. Fig. 5 is a sectional view on the line 5-5 of Fig. 2.

The apparatus consists of a heater l, to which the liquid to be treated is fed from a suitable source of supply (not shown), a holder 2 which holds` .every portion or particle of the liquid after it has been heated, and a cooler 3 which receives the liquid from the holder and coolsit to the desired degree. The heater 1, holder 2 and cooler 3 are preferably arranged with their inlet an'd outlets in different horizontal planes, so that the liquid will liow from one to the other substantially. continuously under the influence of gravity after the complete operation of the apparatus is under way.

The heater 1 and cooler 3 may each be constructed in any ordinary or preferred manner. As the present invention relates to the holder 2, further description of the heater 1 and cooler 3 will not be necessary, although reference may be made to Letters lPatent of the United States, No. 878,225,

to John C. Miller, dated February 4, 1908, for a heater and cooler suitable for use zvitlh the holder about to be described in de- Oli the holder 2, 2a indicates a casing or housing having a bottom 2b and a cylinder 2* forming the side Wall or walls of the casmg. Near its peripheral edge, the bottom 2b 1s provided with a flange 2d to which the lower end of the cylinder 2 is connected.

2e indicates an annular recess formed in the bottom 2b adjacent the inner face of the flange 2d and receives the lower end of thel cylinder 2. This form of construction vprovides a liquid tight joint between the cy1in= der 2 and bottom 2". The inner Walls of the cylinder 2c and bottom 2b are preferably lined with some suitable non -corrodible material, for instance German silver, as lindicated at 2c', which does not affect the liquid being treated. V

.At its-center, the bottom is preferably provided With an enlarged or reinforced por tion 2f, in which is formed an axial opening 2f. Mounted in said opening 2f is a liquid outlet member 2g formed with a conduit 2g. This member extends upwardly from the bottom 2b and is hollowed out to form a conically shaped seat for a rotary conical valve 2h. The valve 2h is formed with an axial conduit y2h through it which serves as the conduit for the outlet member 2g when the valve is in normal' position and during the pasteurizing operation 2*, 21, indicate openings formed respectively in the outlet member 2fg and valve 2". These openings are arranged to register when the valve 1s rotated to one position and thus permit the liquid in the casing 2a to flow into the outlet 2g and be removed from the casing at the end of the holding operation. This valve also permitsthe discharge of the cleansing fluid with which the inner walls of the casing maybe cleaned from time to time. The

outlet 'member is preferablyprovided withl -an integral flange 2k in which are formed openings 2k.l

Extending' through said openings are bolts or screws 2l which secure theflange 2k to the thick portion 2t of the casing bottom 2b.

2 indicates suitable devices for supporting the casing 2a at the proper height relative to the heater 1.

2m indicates a cylinder concentrically arranged within the casing 2a. It is provided with a bottom 2n in which is formed a large inder 2m above the bottom 2b of the casing 2a to provide a space 2" between them.

2p indicates a top, preferably of conical shape, carried by the cylinder 2m. The p cripheral edge of the top fits snugly within the cylinder 2c and is formed with a series of openings 2P preferably V shape, through which the liquid passes to the conduit vor space 2X. v

2r indicates a vessel or funnel arranged centrally of the top or plate 2D. As shown in the drawings, the discharge nozzle l of the heater leads'to and discharges the heated liquid into the vessel 2f. From the vessel 2r the 'liquid liows onto the top 2p through suitable outlet ducts 2px found in 'the wall of the vessel 2r adjacent to the upper surface of the top 2P and is thus more or less uniformly spread out in all directions over said top, from the outer peripheral edges of which it is discharged into the channels formed by the ribs 2m. From the channels between the ribs 2m it fiows into the fluid space 2X, 'and from the latter space it enters the cylinder 2m, through the opening 2', and rises therein. The plate 2p is preferably removable from the pylinder 2m. lt is provided with an annular rib on its under side, whereby it may be properly positioned on the upper edge of said cylinder. o fl indicates a cover for the casing 2a. It is provided with an annular depending 'rib 4a which engages the inner wall of the cylinder 2c and thus permits positioning and removal of the top 4 at will. y

At 4", the cover 4 is formed with an opening through which the discharge nozzle la for the heated liquid extends.

2s indicates a conduit extending axialh1 of the cylinders 2c and 2m. nected at its lower end to the valve 2h. At its upper end, the conduit 2s` is open so as to permit the liquid, when it rises in the cylinder 2m to the level of the open end of the conduit, to enter said end and iow down through it andthe valve 2h to the outlet member 2g.

2t indicates a spider or skeleton frame arranged within the cylinder 2m and arranged tostrengthen the sides of the inner cylinder. This frame also constitutes means for .lift-' ing the inner cylinder from within the outer one when desired.

2t indicates a shaft extending through openings in the top 21 and cover 4 and ro'- It is rigidly condle 2v", that is, rotated on the one hand so as to cut off communication directly with the Voutercylinder 2c through thevalve to the outlet duct 2g and cause all of the material to be treated to rise in the inner cylinder 2m to the top of the conduit 2s and flow down therethrough; and on the other hand the valve may be rotated so as to cause the openings in the valve and valve seat to register and permit the discharge of the liquid di'- rectly from the outer cylinder through the valve and into the outlet duct.

5 indicates a pipe leading from the outlet member 2g and connected thereto at its upper end by a coupling 5a.

5b indicates a pipe connected with the lower end of the pipe 5 by a union 5. The pipe 5b is provided with an up-take 5d which caries a discharge nozzle 5e at its upper en 3a indicates a delivery pipe which extends into the lower portion of the cooler as shown in the drawings. At its upper end, this pipe carries a funnel 3b which receives the liquid from the discharge nozzle 5e.

In the processof pasteurization of milk, or other liquid, wherein provision is made for holding the milk for a given length of time after it has been heated and before it is cooled, various sorts of holding mechanisms have been utilized. With all of the earlier devices of this character of which am aware, either a plurality of holding tanks have been employed or if a single tank has ily removed. Alsoby means of a suitable crane, or in *anyother desired way, the

spider 2t may be engaged and the inner cylinder 2my lifted from within the outer cylinder 2a, whereupon every part of the device with which the material or liquid comes in contact will be readily accessible for cleaning purposes.

To thoseskilled in the art of making apniegue i. msm in said passageway, an inner cylinder having a top, the'lower end of said cylinder being open and spaced from the bottom wall l of the outer cylinder, a conduit serving as a valve stem and leading from the valves of said valve mechanism upwardly through said inner cylinder, means connected to said conduit for operating said valve, and means for introducing liquid to be treated between the inner and outer cylinders and at a point above the top of said conduit.

2. In apparatus of the class described, an

outer cylinder, a bottom therefor having a passageway therethrough, a valve mechamsm in said, passageway, an inner cylindery having a perforated bottom wall spaced from the bottom wall of the outer cylinder and removably mounted within the latter, a

conduit serving as a valve stem and leading from the valve, of said mechanism upwardly through said inner cylinder, means connected to said conduit for operating said valve, a removable cover for the inner cylinder, and means for introducing liquid to be treated between the inner and outer cylinders and at a point above the top of said conduit.

casing each provided with a to the sides of the inner casing being spaced rom the sides n ofthe outer casing and the lower end of the inner casing being open to permit liquid to rise therein, andthe bottom of the outer casing being formed with a passageway, a rotary valve mounted in said passageway, said valve being formed with aduct, a conduit connected'with the duct of said valve and extending upwardly through said inner casing, the wall of the conduit being fixed to the wall of the valve, whereby-the rotation of said conduit will operate said valve, an operating member connected to said conduit and extending through openings in the tops of said inner and outer casings, the walls of the passageway in the outer casing and of the openings in the tops of the casings serving to rotatively support said conduit and operating member, and means for discharging liquid between the said casings at a point above the upper end of said conduit.

4. An apparatus of the' class described, comprising an outercylinder formed with an opening in its bottom, an iimer cylinder open at its lower end to permit liquid to rise therein and separated from the outer cylinder to form a space between said cylinders, means for controlling the ilow of the liquid upwardly in said inner cylinder or through Athe opening in the bottom of the outer cyl-l inder, thesaid means comprising a conduit having an open upper end arranged within said inner cylinder and connected at its lower end with the openin in said outer cylinder and a valve mechanisni'at the lower end of said conduit arranged when open to permit the liquid to flow freely through the opening in the bottom of the outer cylinder,

and means for discharging liquid betweenl said cylinders.

5. In apparatus ofthe class described,

comprising a casing having a removable top and a bottom, said bottom being formed with a discharge opening, a cylinder having aremovable top and a bottom, yspacing devices Vinterposed between the sides and bottom of said cylinder and said casing and arranged to form a fluid space between them, means for discharging material on the top of said cylinder whereby it flows over said top and down between the walls of the casing and cylinder, the said cylinder being formed with an opening in its bottom and permitting the material to rise therein, a conduit arranged within said cylinder, the lower end of said conduit being removably mounted in and communicating with said discharge opening in the bottom of the casing and its upper end being open and permitting the material to overflow into said conduit and be discharged, and a device fixed to said conduit and removably mounted in openings formed in the tops of said casing and cylin- -der and operating to support the upper end of said conduit.

6. An apparaus of the class described, comprising a casinghaving a top and a bottom, said bottom being formed with a dischargeopening, 'a cylinder having a top and a bottom, devices for supporting vthe bottom of the cylinder above the bottom of the casing to form a lluid space between them, ribs interposed between the side walls of the casing and cylinder and extending longitudinally from end to end thereof to form channels for the material, means for discharging material on the top of said cylinder whereby it flows over said top and down between the walls of'the casing and cylinder, the lower end of said cylinder being open and permitting the material-to rise therein, a conduit arranged within said cylinder, the lower end of said conduit being connected withsaid discharge'opening in the bottom of the casing and its upper end being open and permitting the material to overilow into said conduit and be discharged, and a device connected to said conduit and removably supiso cported in openings in the tops of said cyliner and casing for supporting the upper endv arranged within said casing and forming with the inner walls of said casing a relatively thin fluid space, the lower end of the holder being open to permit liqu1d to rise therein, a conduit arranged within said holder and connected at its lower end with the discharge opening in the bottom of the casing, the upper end of the condult being open yand arran ed near the top .of the holder, means for ischarging material within the casing at a point above the open end of said conduit, and a rotary Valve interposed between said conduit and said opening in the bottom of said casing.

8. An npparatus of the class described, comprising a closedcasing formed with a discharge opening in its bottom, a holder arranged wlthin said casing and forming with the inner walls of said casing a fluid space, the lower end of the holderbeing open to permit liquid to rise therein, a valve seat and valve therefor arranged in said opening and formed with axial openings through them, and also formed with ports adapted to register when the valve is rotated, a conduit arranged within said holder and coni nected at its lower end with said valve, and

operating as a stem to rotate said valve, the upper end of the conduit being open and arranged near the top of the holder, means connected with the conduit and extending through the holder and casing to outside the latter for operating the conduit to rotate the valve, and means for discharging material within said casing at a point above the open end of said conduit. e

9. An apparatusr of the class described, comprising a casing having a top and a bottom, said bottom being formed with a' discharge opening, a cylinder having a top and a bottom, devices for supporting the bottom of the cylinder above the bottom of the casing to form a fluid space between them, means for discharging material on the top of said cylinder whereby it flows over said top and down between the walls of the casing and cylinder, the said cylinder be-j ing formed with an opening in its bottom and permitting the material to rise therein, a conduit arrangedy within said cylinder, the lower end of said conduit being connected with said discharge opening in the bottom of the casing and its upper end being open and permitting the material to overflow into said conduit and be discharged, and means for supporting the upper end of said conduit without obstructing the opening there' into.

10. In an apparatus of the class described, the combination of two cylinders, one arranged within the other and the inner cylinder being separated from the outer one to form a circumferential space between them, a bottom for the outer cylinder, an annular bottom member for the innercylinder, through which liquid passes, devices for' supporting the annular bottom member in spaced relationship to the bottom of said outer cylinder to form a passageway through which the liquid flows from the circumferential space to the opening in the annular bottom member, the bottom of the outer cylinder being provided with an outlet, a conduit connected with the said out let and extending upwardly within the inner cylinder, the upper end of the conduit being open to receive the liquid rising in said inner cylinder, a Valve mechanism arranged at the lower end of said conduit and arranged when open to permit the liquid to ow directly from said outer cylinder through the outlet in the bottom thereof,

and means for conveying liquid to the cir-` cumferential space between the two cylinders.

In testimony whereof l afiix my signature, inthe presence of two witnesses.

LEROY S. PFOUTS.

Witnesses: i

WHLIAM H. MILLER, JOHN H. BISHOP.

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